Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement de » developpement des, developpement durable
innovation case » innovation based, innovation chapter, innovation center
a developpement » au developpement, de developpement, le developpement
technology 2.2 » technology _, technology 1, technology 3
2.2 innovation » 2.3 innovation, 3 innovation, der innovation
case date » case data, cases data, case case
date 6.2 » daten 6.2, data 6.2, date 4.2
costs a » costs _, costs 4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology 2.2 innovation case date 6.2 communication costs a developpement de l'afrique.*.